Guys,

I slapped on a JCW exhaust (resonator delete), Forge FMIC, Forge DV (BOV), K&N panel filter, and a piggy-back ecu which turns the wick up to 1.3bar. The R60S feels very strong off the line and the pull in mid range is stupidly strong that it makes me giggle like a kid in a candy store. Bear in mind this mini is not for me. It's a brand new R60S (1 month old) and intended as a suprise present for the missus for Christmas.

Background info aside. After all the mods, I've noticed a slight hesistant in throttle at the 2500rpm mark (yes, advanced the boost timing) to a point where the car seemed like it was surging. I suspected it was the piggy-back ecu so I had it disconnected which meant it went back to factory 1.1bar (thereabouts). The surging was far less as the boost went back to kicking in at 3000rpm. In stock form, the car didn't have this issue. I know turbo lag and this is definitely not turbo lag. Connecting the piggy-back ecu makes the issue even more prominent (due to running slightly higher boost).

Now I'm suspecting the spring rate in the Forge DV (BOV) and so might attempt tonight to replace the spring to a slightly lower spring rate whilst not compromising the boost holding capabilities (very important when one desires to run higher boost).

Can anyone chime in on this? Thanks in advance.

 

1.1 bar is around 15psi. I didn't know a stock mini was pushing that..

 

I may be wrong but it sure does look like 1.1bar when I had the SG2 on it prior to the piggy-back ecu which pushed it up to 1.3bar.

 

It's the piggy back, you're feeling the transfer from stock to the piggy back, my wrx did the same thing, your tuner can fine tune it out but in my case, my tuner would tune it out and then the car would relearn the hickup...

That's why I would do open source, never touching a piggyback again.. I wish Cobb would make a damn accessport, I think that's the best route..

Best of luck

 

Baseline is 12, spikes around 13

 

Not sure if the Ultragauge is 100% accurate (it should be, right? Just reads the output from the ECU), but I have seen over 15psi.

 

I don't believe I've ever seen over 15 psi on my UltraGauge. Definitely got into the 14s, but not sure about anything above that. I'll have to pay more attention in the future.

 

I set an alarm on the UG for 15 psi, or 15.5 or something. It's gone off several times while passing vehicles on the highway.